Out of the two Panasonic. I wouldnt touch either of them IMO. Check out onlinecarstereo.com also they have great prices over all. Try lookin at like a Pioneer DEH-4900 or above i believe. Great deck and lotsa EQ bands on the more expensive ones. Also the tried and true CDA-9856 from Alpine as well as the newer ones. Dual is a bad choice. I have my Hifonics Amp behind my seat and two subs behind the passenger seat all in a reg cab and fits nicely. I have overheated once but it was my fault and has never happened again.
2003 DSG Mustang GT-Procharger, 3 core IC, some happy gas, full bolt-ons, suspension, wheels/tires, etc. CMS Blower cams, and other stuff waiting for install.
2009 R6-Raven-FE, flushies, double bubble screen, Graves exhaust, BMC, and PC-V
2006 F150-Lariat, 4x4, Daily